I saved my V5.0 BIOS just a couple of days ago, so i have the BIOS for FX-797A-TDF V5.0 if that helps.
I tried reflashing with my backup but i wouldn't boot, even though it is the backup i took from GPU-Z before i played around abit, i can reflash if i use my own BIOS but I'm guessing i'm using the wrong software or parameters for the flash. (atiwinflash -f -newbios -p 0 tahiti.rom)
Can anyone help with that i would be greatful, the card is completly bricked but i'll try putting a switch on and reflash it with the original firmware, if anybody can help. Otherwise if you can do with only one DVI output Gigabyte has a useful bios that works on my card just fine, the Gigabyte.HD7970.3072.121106.rom